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Biomedical subjects

K L Bryan

Publications and source records attributed to K L Bryan.

5 recordsLinked to original sources

Differential effects of left and right cerebral vascular accidents on language competency.

While language facility was once considered to be the sole province of the "dominant" left hemisphere, clinical and experimental findings suggest the right hemisphere plays an equally important role in many language tasks. To elucidate differential hemispheric language processes, Right Hemisphere Language Battery and Western Aphasia Battery data from left (LHD) and right (RHD) hemisphere cerebral vascular accident (CVA) patients and controls were subjected to multivariate discriminant analysis. The highly significant group differences and overall 95% classification rate obtained confirms the utility of the dependent measures in differential diagnosis. Results suggest CVA patients experience disparate language deficits, with the LHD group experiencing concordant-convergent language deficits and the RHD group displaying discordant-divergent deficits that interfere with the receptive and expressive language skills necessary for successful social discourse.

Brain↗

A framework for assessing communication in mental illness.

Many studies support the notion of semantic and/or pragmatic difficulties in people with mental illness. This paper describes a framework (based on a discourse analysis model) for the assessment and reassessment of communication in mentally ill persons.

Communication Disorders↗

'Confabulation' in narrative discourse by schizophrenic patients.

There are many clinical reports of confabulation by schizophrenic patients. This study provides evidence of a form of confabulation by schizophrenic patients in tasks which do not include a memory component. It uses a linguistic framework to analyse the components of this confabulation.

Cognition Disorders↗

[Set of neuropsychological tests for the assessment of language disorders after damage to the right cerebral hemisphere: preliminary results].

A set of five experimental tests was prepared for the assessment of language disturbances in right hemisphere-damaged (RHD) patients. The Right Hemisphere Language Battery by Bryan (1995) was a basis for these tests. The set comprises the Metaphor Picture Test, the Written Metaphor Test, the Inferential Meaning Test, the Humour Test and the Lexical Semantic Test. Thirty-six RHD, 15 left hemisphere damaged (LHD) without aphasia and 30 control (C) subjects took part in the investigation. All test significantly differed between the RHD and C groups. No significant differences were noted between LHD and control groups, except for the Inferential Meaning Test. The quantitative performance of tests was different in all the groups. Results of the study indicated patients with right frontal damages to make more errors than those with right posterior lesions.

Aphasia↗